Mitsubishi Electric Corp. was hit by a massive cyberattack that may have caused the leakage of information related to its business partners. The intrusion took place on June 28, 2019, and the company launched an investigation in September 2019. Local media attribute the cyber attack to a China-linked cyber espionage group tracked as Tick (aka Bronze Butler) The hacker group has been targeting Japanese heavy industry, manufacturing and international relations at least since 2012, according to experts, the group is linked to the Peoples Republic of China.”]
Source: https://securityaffairs.co/wordpress/111201/hacking/mitsubishi-electric-cyberattack.html